CFD-DEM modelling of hydraulic transport of coarse solids in vertical pipelines

E. Abbaszadeh Molaei, S. B. Kuang, Z. Y. Zhou, A. B. Yu

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Hydraulic transport of solids in pipelines is an important operation in industries such as metallurgy, mining and mineral processing. The hydraulic behaviour of the solids, i.e. velocity and concentration spatial distributions and pressure drop, in the conveyer pipes should be well understood as it results in developing of a set of correlations which are necessary for the design of hydraulic pipelines. Pipeline slurries exhibit a complex range of flow patterns, depending upon the physical properties of carrier fluid and transported solids, the superficial liquid velocity and concentration of slurry. Most of numerical, theoretical and experimental studies in the area of vertical lifting have been focused on the transportations of fine and medium size solids; and just a few research have been carried out on the vertical hydraulic conveying of coarse particles, particularly in terms of numerical studies. Therefore, in this work, a three-dimensional Discrete Element Model (DEM) and Computational Fluid Dynamics (CFD) are coupled to study the hydraulic transport of coarse solids in vertical conveyers with carrying fluid of water under different operation conditions. The model shows a good agreement with experimental observations both qualitatively and quantitatively, and it captures some specific phenomena related to the coarse particles such as the near-wall hydrodynamic lift force, which keeps the particles away the pipe wall.

Original languageEnglish
Title of host publication20th International Conference on Hydrotransport
EditorsLachlan Graham, Sean Sanders, Rob Sumner
Place of PublicationBedfordshire UK
PublisherBHR Group Limited
Number of pages14
ISBN (Print)9781510840157
Publication statusPublished - 2017
EventInternational Conference on Hydrotransport 2017 - Melbourne, Australia
Duration: 3 May 20175 May 2017
Conference number: 20th


ConferenceInternational Conference on Hydrotransport 2017
Abbreviated titleHydrotransport 2017
Internet address


  • CFD
  • Coarse particles
  • DEM
  • Hydraulic transport
  • Simulation
  • Vertical pipes

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